Adustable reamer for die stocks



April 14, 1936- .1. E. FORNDRAN ADJUSTABLE REAMER FOR DIE STOCKS Filed July. 19, 1934 4 Sheets-Sheet l E. 7 0772 drdrz April 14, 1936. J. E. FORNDRAN ADJUSTABLE REAMER FOR DIE STOCKS Filed July 19, 1954 4 Sheets-Sheet Inventor (.7. E. Fbrrzdran April 14, 1936. J, E, RAN 2,037,224

ADJUSTABLE REAMER FOR DIE STOCKS Filed July 19, 1934 4 Sheets-Sheet 3 Inventor By Attwmey A ril 14,1936. J. E. FORNDRAN ADJUSTABLE REAMER FOR DIE STOCKS Filed July 19, 1934 4 Sheets-Sheet. 4

- Inventmr- J. E. Forndran Attomey Patented Apr. 14, 1936 UNITED STATES PATENT OFFlC 2,037,224 ADUSTABLE REAMER FOR. DIE STOCKS John E. Forndran, Rock Springa Wyo. Application July 19, 1934, Serial No. 736,126

)1 Claim.

This invention relates to. an adjustable reamer for die stock, the main object of the invention being to provide hinge means for attaching the body of the reamer to a die stock and in a detachable manner, with means for adjusting the cutting members of the reamer and to provide a blade for removing a feather edge from an end of a pipe whilethe pipe is being reamed.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure l is a plan view showing the device applied to a die stock.

Figure 2 is an elevation of Figure 1.

Figure 3 is a section on line 3-3 of Figure 2.

Figure 4 is'a section on line 44 of Figure 2.

Figure 5 is an elevation partly in section of the reamer and showing the sliding blade.

Figure 6 is a view of the blade.

Figure 7 is a view of one of the cutting members with its threaded block.

Figure 8 is a section on line 8-8 of Figure 1.

Figure 9 is a section on line 9-9 of Figure 1.

Figure 10 is a section on line 98-40 of Figure 1, this figure showing the cutters engaging a pipe.

In these drawings, the letter A indicates the die stock which is provided with the usual oppositely arranged tubular members a for receiving the handles a. This die stock may be of any suitable construction and the reamer is shown at B and includes the elongated body 8 having the outwardly extended arms 2 and 3 connected to one face thereof, the arm 2 being hingedly connected as shown at 4 to a projection 5 on a clamping block 6 which is connected by a U-bolt i to one of the tubular members a. A similar clamping block 8 is connected by a U-bolt 8 to the other tubular member a and this block carries a pin Id for receiving the eye member it carried by the other arm 3. A spring latch i2 carried by the arm 3 has a projection l3 engaging the pin for releasably holding the eye in engagement with the pin l0. Thus the reamer can be swung outwardly by releasing the latch so that the dies of the devices A can be removed. I

The body I is formed with a groove 98 of substantially rectangular shape in cross section and the intermediate part of the groove is in com- (Cl. PL-73) munication with an elongated slot IS in the body and the cutter members It extend through this slot and have blocks ll attached to their inner ends. Each block slides in the groove M and has a threaded bore I8 for receiving a screw shaft i9 5 whichis provided with right and left threaded portions as shown in Figure 8, the shaft being secured in the end plates 20. These plates and the cover plate M are secured to the body by screws or the like. A knob 22 is threaded to each 10 end of the shaft and a collar 23 looks each knob to the shaft, each collar being provided with the holes 2d for receiving a tool. Each collar has a part extending into a hole in the end part 2d.

A slot 25 is formed in the cover plate and in a side part of the body for receiving a knife 26 which is normally thrust into operative position by a spring 27 attached to the body and having one end connected to a screw 28 fastened to the knife and passing through a slot 29 in the body as clearly shown in Fig. 5. As will be seen from Figure 8, the reamer cutters B6 are beveled on their outer edges so that they tend to make a beveled cut in the inner ends of the pipes being reamed and if the cutters are improperly adjusted or that they enter the pipes too far, they will cut so deep into the pipe as to form a sharp or feathered edge at the end of the pipe. As

. shown in Figures 1, 2 and 10 the spring pressed knife 26 is so located that it will engage the end 30 of the pipe P being reamed by the cutters it and as will be seenfrom Fig. 10 when the knife it has entered the pipe a certain distance the end of the knife 2t engages the end edge of the pipe and will be yieldingly held against said edge by the spring 211. Thus, if a feathered edge is formed on the end of the pipe by the cutters it the knife 26 will remove it, as the knife is held against the end of the pipe by the spring so that the knife will not cut into the end of the pipe unless said end is feathered.

A pointer plate 30 is fastened to the cover plate by screws 3i passing through slots 32 in the pointer plate, said plate having teeth 33 which extendinto a slot 34 in the cover. plate and exposes the screw shaft and blocks. This pointer plate will indicate what position the cutting members must be moved, to reamdifferent sizes of pipes and by making the plate adjustable, it can be adjusted after the cutting members have been ground.

From the foregoing, it will be seen that I have provided a reamer which can be easily and quickly attached to a die stock and which can be moved on a hinge to enable the dies to be changed, with means for adjusting the cutting members to fit pipes of different sizes. I also provide a knife for removing a feathered edge from that end of the pipe being reamed. The latch member and its pin will prevent injury to the die stock or reamer in case of over-stroke of diestock which will release the latch means ll of the reamer from the pin Hi, so that the reamer can swing to open position. As will be seen from Figure 1, the pin 13 of the latch member l2 fits in a curved recess 10 in the pin l0, so that pressure against the reamer body will cause the latch to release itself from the pin it], so that the reamerbody can swing outwardly.

The arms 2 and 3 have holes 3' therein for receiving the pins 2 on the die stock as some stocks have these pins thereon.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such'changes fall within the scope of the appended claim.

I claim:--

A reamer of the class described comprising therein located adjacent an elongated body having a longitudinally extending groove in one face thereof and a longitudinally extending slot extending from an intermediate part of the groove through the opposite face of the body, said groove being slightly wider than the slot. a pair of cutting members passing through the slot and having heads extending at right angles from their inner ends, said heads being slidably arranged in the groove and extending in opposite directions, a shaft passing through the groove and rotatably supported by the body and having right and left of which is threaded in one head and the other in the other head, a handle connected to one end of the shaft, a cover plate attached to the first mentioned face of the body for holding the heads in the groove, said body having a second slot a side of the body and from the groove and slot located opposite an end mentioned slot, a knife slidparalleling and spaced and having a portion portion of the first ably arranged in from that face of the body through which the first slot extends, and a spring for yieldingly holding the knife against that end of a pipe which is being reamed by the cutting members.

JOHN E. FORNDRAN.

threaded portions, one I the .second slot and projecting 

